/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package types

import (
	"context"
	"time"

	"mosn.io/api"
)

// factory
type TracerBuilder func(config map[string]interface{}) (Tracer, error)

type Driver interface {
	Init(config map[string]interface{}) error

	Register(proto api.Protocol, builder TracerBuilder)

	Get(proto api.Protocol) Tracer
}

type Tracer interface {
	Start(ctx context.Context, request interface{}, startTime time.Time) Span
}

type Span interface {
	TraceId() string

	SpanId() string

	ParentSpanId() string

	SetOperation(operation string)

	SetTag(key uint64, value string)

	SetRequestInfo(requestInfo api.RequestInfo)

	Tag(key uint64) string

	FinishSpan()

	InjectContext(requestHeaders api.HeaderMap, requestInfo api.RequestInfo)

	SpawnChild(operationName string, startTime time.Time) Span
}
